para_variables.h

/*
 * Copyright (c) 2021, Adam Boardman
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#pragma once

#include <map>
#include <fstream>

typedef enum {
	ParaVarErrorNone,
	ParaVarErrorReadBlock,
	ParaVarErrorBadSig,
	ParaVarErrorBadCheckSum
} ParaVarErrors;

static const int ParaEnvBlockRWStart = 0x20000;
static const int ParaEnvBlockSize = 0x4000;
static char ParaEnvNullChar = '\0';
static const int ParaEnvBlockSigSize = 8;
static const int ParaEnvBlockSig2Pos = ParaEnvBlockSize - ParaEnvBlockSigSize - 4;
static const int ParaEnvBlockSig1Pos = 0;

class ParaVariables {
public:
	ParaVariables();

	ParaVarErrors ReadFromStream(std::ifstream &stream);

	std::string &operator[](const std::string &key);


	void Clear();

	void WriteToStream(std::ofstream &stream);

private:
	std::map<std::string, std::string> variables;
};